1280878 has 8 divisors (see below), whose sum is σ = 1953000. Its totient is φ = 629880.

The previous prime is 1280869. The next prime is 1280887. The reversal of 1280878 is 8780821.

It is an interprime number because it is at equal distance from previous prime (1280869) and next prime (1280887).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5128 + ... + 5371.

It is an arithmetic number, because the mean of its divisors is an integer number (244125).

2^1280878 is an apocalyptic number.

1280878 is a deficient number, since it is larger than the sum of its proper divisors (672122).

1280878 is a wasteful number, since it uses less digits than its factorization.

1280878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10562.

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 1280878 is about 1131.7588082273. The cubic root of 1280878 is about 108.6015246008.

The spelling of 1280878 in words is "one million, two hundred eighty thousand, eight hundred seventy-eight".